an acronym standing for "I want to believe" from popular sci-fi show The X-Files. not necessarily used in any meaningful capacity.
Tom: "Did you see that new episode of X-Files last night?? There were aliens!"
Alex: "Yeah man, IWTB..."
Alex: "Yeah man, IWTB..."
by letnd March 15, 2016
Noun: in regards to The X-Files: I Want To Believe. The second movie, of the well know 1993-2002 franchise, which came out in 2008
by Kdswfm March 20, 2016